Radiation processing of EPDM/PP blends

被引：2
|
作者：
Zaharescu, T [1 ]
Budrugeac, P [1 ]
机构：
[1] Adv Res Ctr, R&D Inst Elect Engn, Bucharest 74204, Romania
来源：
POLYMER BULLETIN | 2002年 / 49卷 / 04期
关键词：
D O I：
10.1007/s00289-002-0097-9
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The effect of ionizing radiation on thermal oxidation of ethylene-propylene copolymer/polypropylene (EPDM/PP) was evaluated over the range of total gamma doses up to 250 kGy. The influence of irradiation dose on oxidation induction periods was investigated by oxygen uptake and thermal analysis on polymer samples containing various concentrations of components (100/0, 80/20, 40/60, 60/40, 20/80 and 100/0 w/w). Drastic decrease in oxidation induction time was observed for low doses. The competition between crosslinking and scission has been examined on the basis of radical recombination on post-irradiation time. The influence of specimen formulations on oxidation induction time is discussed regarding to the contribution of antagonistic processes: crosslinking and oxidative degradation.
引用
收藏
页码：297 / 303
页数：7
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